> If you put a spoon or fork in there it'll get hot after a few minutes.
> That's about it.  Very thin metal (like in CDs) will get vaporised.
> Something like aluminium foil won't, in fact some books say you can partly
> defrost something by wrapping the bit you don't want defrosted in the
foil.

The same thing when you have a ceramic mug that painted with lead based
paint the mug will be heated up while the content remains cool.


On 27/10/06, Tony Smith <ajsmith@rivernet.com.au> wrote:
>
> > > One simple example: turn on an empty microwave oven.
> > > Because of reflections inside the heating chamber the thermal
> > > protection from the magnetron will be OFF in less than 3-4 minutes
> > > (100% continous power).
> >
> > One thing I've always wondered. Pretty much every microwave
> > instruction says not to put metal into the oven -- yet the
> > whole oven is made of metal.
> > I know that of course metal reflects rather than absorbs, but
> > it shouldn't do any harm (at least not as long as there is
> > enough other material in the oven). Or am I missing something?
> >
> > Gerhard
>
>
> If you put a spoon or fork in there it'll get hot after a few minutes.
> That's about it.  Very thin metal (like in CDs) will get vaporised.
> Something like aluminium foil won't, in fact some books say you can partly
> defrost something by wrapping the bit you don't want defrosted in the
> foil.
>
> Two bits of metal close together may produce arcs, as will foil crumpled
> up.
> Or it may just sit there getting hot.  Something metallic that comes close
> to the oven wall may arc too.
>
> There are a few people trying to melt metal (like aluminium or silver) in
> microwave ovens.  The focus seems to be to make a ceramic crucible that
> gets
> hot enough for the melting to happen.
>
> Most microwave have a couple of thermal cut-outs.  One is usually near the
> magnetron itself, the other above the oven somewhere at the other
> end.  Tip:
> don't test these by pointing a blow torch at them.  They go 'ping' and
> don't
> really work after that.  Done it exactly once :)
>
> Curing wood is something that's been done for a while.  A burning match or
> candle is interesting.
>
> Tony
>
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